personally i would go for something like php nuke because it is approximatly $200 cheaper.
although it sometimes take a bit to get it working, any vaguely competent person with even the slightest knowledge of php, (e.g. myself when i first used phpnuke) can get it working... and you would have saved all that money, and becuase it is opensource, you can do whatever you want with it... aslong as you dont claim that you made it...